Chace Crawford honored his former Gossip Girl co-star Michelle Trachtenberg following news of her sudden and tragic death at age 39. 

Hours after news broke that his former colleague was found dead in New York City on Wednesday, the Lubbock-born actor, 39, paid tribute to Trachtenberg, best known for her roles in Buffy the Vampire Slayer and Harriet the Spy. 

Although her cause of death has not been confirmed, sources told People that she had recently undergone a liver transplant and had ‘struggling’ prior to her passing.

As the world mourns the loss of Trachtenberg, Crawford shared a slideshow of throwback photos of them together and described her as ‘one of a kind.’ 

‘I remember her coming on set for the first time and just absolutely owning it. She was a force of nature and just so so unapologetically funny and magnetic.. remembering those years with a big smile. Just a terrible loss. Love you ❤️,’ he captioned his post. 

Ed Westwick who played Chuck Bass on Gossip Girl was among the first to memorialize Trachtenberg as he revealed he was ‘so sad to hear’ of her passing. 

Chace Crawford honored his former Gossip Girl co-star Michelle Trachtenberg following news of her sudden and tragic death at age 39

Additionally, Blake Lively shared a touching tribute to Trachtenberg, whom she described as ‘fiercely loyal,’ ‘kind,’ and ‘deeply sensitive.’ 

‘This is the first day I met Michelle. She was electricity. You knew when she entered a room because the vibration changed,’ Lively stated in her lengthy Instagram tribute. 

Lively emphasized Michelle’s authenticity, writing, ‘Everything she did, she did 200%. She laughed the fullest at someone’s joke, she faced authority head on when she felt something was wrong, she cared deeply about her work.’

The It Ends With Us Star said Michelle, who portrayed Georgina Sparks on the show, ‘was proud to be a part of this community and industry as painful as it could be sometimes’ and ‘was fiercely loyal to her friends and brave for those she loved.’

‘She was big and bold and distinctly herself,’ Lively — who played Serena van der Woodsen on the series from 2008-2012 — added in her tribute. 

The star then shared an anecdote about Michelle’s lipgloss. 

She recounted how Michelle ‘always had yummy caramel smelling lipgloss on because she didn’t just want to sparkle on camera, she liked creating a nice experience for anyone who was in her orbit, even down to the subtle smell of her lipgloss because she cared about the sweet details.’

Lively described her as a ‘kind person, through and through.’

Hours after news broke that his former colleague was was found dead in New York City on Wednesday, the Lubbock-born actor, 39, paid tribute to Trachtenberg, best known for her roles in Buffy the Vampire Slayer and Harriet the Spy

As the world mourns the loss of Trachtenberg, Crawford shared a slideshow of throwback photos of them together and described her as ‘one of a kind’

Reflecting on the loss, she added: ‘Time passes. You take for granted that you get the chance to see an old friend. To paraphrase, the real tragedies in life are the ones that blindside you on an idle Tuesday.’

She concluded her tribute by urging her fans: ‘Hold those you love and have loved dear. The world lost a deeply sensitive and good person in Michelle. May her work and her huge heart be remembered by those who were lucky to experience her fire.’ 

Trachtenberg had a recurring role as ‘The Witch of the Upper East Side’, Georgina Sparks, in 28 episodes of The Gossip Girl spanning 2008-2012.

The show followed a group of wealthy teenagers attending prestigious private schools, while navigating friendships, rivalries, and relationships.

Trachtenberg also appeared in two episodes of the Gossip Girl reboot on Max in 2022, reprising her role of Georgina. 

On Wednesday, Trachtenberg died of natural causes following a liver transplant, police sources told ABC News.

The star was found dead by her mother on Wednesday in her New York City apartment near Columbus Circle just after 8 am local time.